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- W2943849340 abstract "Summary The hippocampus supports memory encoding and retrieval, with distinct phases of theta oscillations modulating the amplitude of gamma-band activity during each process. Encoding and retrieval operations dynamically interact over rapid timescales, especially when sensory information conflicts with memory. The ability to link hippocampal dynamics to specific memory-guided behaviors has been limited by experiments that lack the temporal resolution to segregate when encoding and retrieval occur. To resolve this issue, we simultaneously tracked eye movements and hippocampal field potentials while neurosurgical patients performed a spatial memory task. Novelty-driven fixations increased phase-locking to the theta rhythm, which predicted successful memory performance. Theta to gamma phase amplitude coupling increased during these viewing behaviors and predicted forgetting of conflicting memories. In contrast, theta phase-locking preceded fixations initiated by memory retrieval, indicating that the hippocampus coordinates memory-guided eye movements. These findings suggest that theta oscillations in the hippocampus support learning through two interleaved processes: strengthening the encoding of novel information and guiding exploration based on prior experience." @default.
- W2943849340 created "2019-05-16" @default.
- W2943849340 creator A5012136362 @default.
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- W2943849340 date "2019-05-07" @default.
- W2943849340 modified "2023-10-17" @default.
- W2943849340 title "Hippocampal theta coordinates memory processing during visual exploration" @default.
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- W2943849340 doi "https://doi.org/10.1101/629451" @default.
- W2943849340 hasPublicationYear "2019" @default.
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